In a skillet, combine soup, water and butter; bring to a boil. Addkielbasa and rice. Reduce heat and simmer about 20 minutes or untilrice is almost tender. Stir in peas and mushrooms. cover and simmer 15minutes or until rice is tender and peas are heated through. Sprinklewith cheese; cover and let stand until melted. Make 4-6 servings.